Pipe connection



April W, 1941.

H. H. HEYN ETAL PIPE CONNECTION Filed Oct. 1, 1938 Patented Apr. 15,1941 s "PATENT OFFICE PIPE CONNECTION Herman B.

Heyn and Frank G. Boschke,-Pasadena, cane, assignors to Johns-ManvilleCorporation, New York, N.Y., a corporation of New York ApplicationOctober 1, 1938, Serial No. 32,722 3 Claims. .01. 285-39) The presentinvention relates to improvements in pipe connections, such as employedbetween service pipes and mains, tanks, and similar pressure chambers. Aconventional connection of this type comprises a corporation stopconsisting of a nipple-like member in which is incorporated a shut-offcook. The nipple is threaded in a conventional manner for connectionwith a water main, tank or the like, and for connection with a union orsimilar means on a service pipe.

Heretofore, particularly where the mains or tanks to which theconnections are made have been thin walled or of frangible material,difficulties have been encountered due to the tendency of the threads tostrip from the main upon lateral movement of the service pipe or main.Such movements may occur in the normal case by reason of trafficvibrations, movements of earth surrounding the pipes, and the like. Ithas been proposed to overcome these difficulties by the use of saddlesextending around the main and includinga portion supporting thecorporation stop and reenforcing the connection of the same with themain. Such saddles, however,

being expensive in themselves and making unnecessary expensiveinstallations, have not been wholly satisfactory for these and otherreasons.

It is an object of the present invention to provide a threaded pipeconnection which will inelude a reenforcing member adapted to,distribute any stresses, occurring by reason of vibration or movementof the pipe or main or other device to which the pipe is connected, overa comparatively large area of said main and to thereby relieve thestress on the thread.

It is a further object of the invention to provide a construction ofthis type which may be easily applied and which is of relatively lowcost.

It is a further object of the invention to provide a pipe connection asreferred to which can be applied to mains under pressure and insubstantially the conventional manner now employed.

Our invention will be fully understood and further objects andadvantages thereof will become apparent when reference is made to thedetailed description thereof which is to follow and to the accompanyingdrawing, in which- Fig. 1 is a plan View of a pipe connection devicesuch as a corporation stop embodying the present invention;

Fig. 2 is an end elevational view of the construction shown in Fi 1-; i

Fig. 3 is a perspective view illustrating an olement of the constructionshown in Figs. 1 and 2, and

Fig. 4: is a sectional View, taken on a transverse centerline of thedevice, of a modification of the construction of Figs. 1 and 2.

Referring now to the drawing, and particularly Figs. 1, 2, and 3, theinvention is illustrated as embodied in a corporation stop of has icallyconventional type. It will be understood,

1 however, that the invention is not to be limited to corporation stops,but that the functions and advantages thereof may be obtained with othertypes of pipe connections, for example, with those where no stop orvalve is employed.

The device illustrated comprises a nipple-like member II] in which isincorporated a valve structure of any suitable type indicated generallyat H. The member In has a threaded end l2 for connection to a union orthe like on a service line or other pipe, and an end l3 which includes atapered threaded portion l5 for engagement with a threaded opening inthe wall of a water main or other pressure chamber M. The portion of theend 13 above thetapered threads is suitably of uniform diameter andcarries threads l6 which may be any standard thread. Arranged to bethreaded on the portion I6 is a nut H.

A split yoke 20 is employed which suitably comprises similar halves 2|and 22, one of such similar halves being depicted in Fig; 3, formed of acontour to fit the main or other pressure chamber l4. Each of the halves2| and 22 includes a semi-circular recess 25 at the center of its inneredge, the recesses, when in adjacent relationship, forming a circularopening of a diameter to fit preferably somewhat loosely around the endl3 of the member ID. The two halves 2| and 22 are held in assembledrelationship, in accordance with the preferred form of the invention, bymeans of suitable studs or screws 23 extending through apertured ears 24formed in corresponding position adjacent the meeting edges of the yokehalves 2| and 22 and preferably integral therewith. As illustrated, theapertures in ears 24 of yoke half 22 may be internally threaded forengagement with studs 23. It will be readily understood, however, that lin lieu of this construction, bolts may be ;employed which extendcompletely through the ears and bind the ears of the adjacent yokehalves by means of nuts. Also, any otherconventional securing means maybe employed in lieu of the :bolts or studs referred to. The uppersurfaces of the yoke halves are of planar form to provide, when inassembled relationship, a seat 26 for nut I! as will be later described.

In assembling a corporation stop of the pres ent invention on a watermain, for example, the nut I1 is threaded on the end [3 of member i5 5and backed up for a substantial distance on the thread I6 to betemporarily out of the way of further operations. After drilling andthreading the opening in the main l8, the tapered threaded portion I5 ofmember ID is inserted in the 10 opening and screwed down snugly, thetapering configuration of portion I5 causing a comprestion of the mainor of the pipe attached to the sive force to be exerted on the walls ofthe main corporation stop, the load is transferred to the I 4 to insurea tight connection. The twohalves bracing yoke and, in turn, to the mainitself, 2| and 22 of the yoke 0 are then placed on the and therebysubstantially eliminates lateral presmain and brought together withtheir recesses sure upon the threads within the main. The 25 oppositeand ears 24 adjoi ing and secured in stop of the present inventionenables the use of such assembled relationship by means of studs asaddle or the like to be completely eliminated or bolts 23. The nut H isthen threaded downin most instances and thereby effects a very conward yto sn ly engage seat 26 f yoke 2 to 20 siderable saving. A furtheradvantage of the e ure y n t e same against the pipe. construction ofthe present invention resides in The p p connec i n thus describedinsures the fact that an increase in the diameter of the against failureof the threaded connection 136- main does not require a proportionateincrease tween the stop and main inasmuch as any tendin th i of t yokeas is the case where ency toward lateral movement of the stop rela- 5 hare employed tively to the main is resisted by the contact of A furtheradvantage of th improved corporathe y t the outer surface of the main.tion stop in accordance with the invention is its In this the StressesCreated y loads tfiildapplicability for use in a standard machine foring to move the servicepipe or main are distapping pipes and makingconnections under tributed over a substantial area of the surface 0pressure, Thus, th i may b drilled and of the main, rather than beingconcentrated in threaded, and t cock, t the nut n in Desithe threadedconnection. The dimensions of the t be inserted with the usual pressuretapping yoke are suitably provided to obtain the desired machinereenforcing and strengthening effect. For pur- In the event thecorporation stop is t be poses of illustration only, it may be statedthat A device in accordance with the present invention, in either of theforms described above, serves admirably to overcome the disadvantages ofpreviously known connections. The device is particularly suitable foruse with pipe such as that made of a hardened compressed asbestos-cementcomposition, but it will be understood that similar advantages will beobtained where the stops are employed with other types of pipes ormains.

Where the pipe connection of the present invention is employed, in caseof any lateral moplied to a main or the like not under pressure, for usein a main having an internal diameter a somewhat simplified constructionmay be cmof 6 inc e t y y Suitably be 4 11197195 ployed, while retainingthe principal advantages on a side measured on its horizontalprojection. of the invention Namely the k may be made However, Suchdimensions may :be changed t as av single element with a centralaperture the particular conditions Of use to 4:0 therein for thereception of the end of member stop is to be put. For example, whereunusual Hi. In the assembly of this form of the device, stresses on tservice p pe or stop ar enoounafter the nut I1 is backed up on thethread it, tered, a yoke of greater area may be preferably the end l3 ofmember I0 is inserted through the employed. aperture of the yoke and theassembly then se- Referr ow t ga sl ghtly moohfied cured to the main orthe like by screwing the form of the invention is disclosed. Inmodithreaded portion of member in the. fication, the construction is e ea y the Same threaded aperture in the main. The nut I! is as thatpreviously desc except that the then turned downwardly as before to bindthe means for fastening the two halves of the yoke yeke against the maintogether is constituted by Co pe portions Having thus described ourinvention in rather of the y k a v s and 22 and the nut it, the fulldetail, it will be understood that these deears 24 and Connect bolts orthe like 23 of tails need not be strictly adhered to but that the deviceof Figs. 1 a d 2 being Omitted AS various changes and modifications willsuggest will be understood from an inspec n of 4, themselves to oneskilled in the art, all falling nut l1 according to this embodiment ofthe within the scope of the invention, as defined by vention includes acircular channel or recess 3i! h ubjoined claims, in the under sidethereof and each half 25 and What we claim 22 of the yoke 0 has aupstanding s 1. A corporation stop for application to a 181' rib 3| Ofsubstantially the CIOSS sectional diurved wall of a, pressure chambercomprising mensions of the groove 39 n the n I11 the threaded portionarranged for engagement with pplication of a corporation stop embody nsaid wall, a rigid split yoke having at least one form of the invention,similar steps are followed curved major surface, said yoke arranged whenas in the first form, except that two halves of assembled to surroundthe stop and to engage a the yoke are brought together and held inassubstantial area of the curved Wall of the pressembled relationship,for example by a manual 5 sure chamber with the curved surface of saidoperation, until the nut I1 is turned downwardly yoke adjacent the curved wall of said pressure on the threads Hi to a sufficient extentthat its chamber, and means threaded on said stop for channel 30embraces the semi-circular ribs 3| of binding said yoke against s d p uhamber the yoke halves. During further downward With said curvedsurfaces in engagement. movement of the nut [1, separation of the yoke2. A corporation stop o application to a halves are prevented by thecooperation of the Curved Wall Of a pressure Chamber p is a groove 30and ribs 3|. When the nut ll is tightthreaded p r rr n f n ement Withened snugly, the entire construction is held in said wall, a split yfirmly assembled relationship as will be readily observed.

oke formed of rigid members with said members having at least one curvedmajor surface, said yoke arranged to surround with said members havingat least one curved l major surface, said yoke arranged to surround thestop and to engage a substantial area of the curved wall 01 the pressurechamber with the curved surface of said yoke adjacent the curved U wallof said pressure chamber, locking means for holding the yoke inassembled relationship, and a cooperating groove and rib carried by saidyoke and said locking means and holding the yoke 10 inassembledrelationship.

HERMAN B. HEYN. FRANK G. BOSCHKE.

